Capture the variation of the pore pressure with different geological age from seismic inversion study in the Jaisalmer sub-basin,India

作     者：Raman Chahal Saurabh Datta Gupta Raman Chahal;Saurabh-Datta Gupta

作者机构：Department of Applied GeophysicsIndian Institute of Technology(Indian School of Mines)DhanbadDhanbadJharkhand 826004India 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2020年第17卷第6期

页      面：1556-1578页

核心收录：

学科分类：081801[工学-矿产普查与勘探] 081803[工学-地质工程] 0709[理学-地质学] 0819[工学-矿业工程] 0808[工学-电气工程] 08[工学] 0820[工学-石油与天然气工程] 0707[理学-海洋科学] 0817[工学-化学工程与技术] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0816[工学-测绘科学与技术] 0827[工学-核科学与技术] 0813[工学-建筑学] 0703[理学-化学] 0814[工学-土木工程] 0825[工学-航空宇航科学与技术] 0704[理学-天文学] 

基　　金：Department of Applied geophysics Department of Petroleum Engineering, IIT(ISM) Dhanbad Gujarat State Petroleum Corporation Limited M/s Schlumberger India IIlinois State Museum, ISM 

主　　题：Pore pressure Seismic inversion Clastic and carbonate reservoir 

摘      要：Geoscientific evidence shows that various parameters such as compaction,buoyancy effect,hydrocarbon maturation,gas effect and tectonic activities control the pore pressure of sub-surface geology.Spatially controlled geoscientific data in the tectonically active areas is significantly useful for robust estimation of pre-drill pore pressure.The reservoir which is tectonically complex and pore pressure is changing frequently that circumference motivated us to conduct this study.The changes in pore pressure have been captured from the fine-scale to the broad scale in the Jaisalmer sub-basin.Pore pressure variation has been distinctly observed in pre-and post-Jurassic age based on the current study.Post-stack seismic inversion study was conducted to capturing the variation of pore pressure.Analysis of low-frequency spectrum and integrated interval velocity model provided a detailed feature of pore pressure in each compartment of the study area.Pore pressure estimated from well log data was correlated with seismic inversion based result.Based on the current study one well has been proposed where pore pressure was estimated and two distinguished trends are identified in the study zone.The approaches of the current study were analysed thoroughly and it will be highly useful in complex reservoir condition where pore pressure varies frequently.